Add (semi-)automatic profiling for Zgoubi

[dtabell]

The goal here is to provide an easy-to-use, and simple to extend, system for profiling Zgoubi. This will make it easier for future developers to identify computational bottlenecks in the code.

[zbeekman]

I agree.

@robnagler

• Would it be possible to install java in the docker container?
  • This will make it possible to export profile data more easily. (And may make it possible to view the profiles if X11/graphical support is present; this is probably not the case, however)
• Would it be possible to generate a minimal TAU/TAU Commander installation RPM as you did for the full install?
  • This might be a good compromise, and provide faster downloads.

[zbeekman]

We could create a Travis-CI job to generate profile data and upload the results somewhere. It would be really nice to have this just happen.

[robnagler]

We can build a special image for Zgoubi development. Let's decouple the automation for a while. Use whatever computers you like to do whatever to produce reports. I don't see value in automating the profiling just yet.

[robnagler]

To be clear, we don't need this to be running in travis. What we want is he ability to type make tau_profile or something like that.